/*
Copyright © 2019 NAME HERE <EMAIL ADDRESS>

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package cmd

import (
	"fmt"
	"os"

	"github.com/spf13/cobra"
)

func init() {
	rootCmd.AddCommand(completionCmd)
}

const (
	longDescription = `
	Outputs shell completion for the given shell (bash or zsh)
	This depends on the bash-completion binary.  Example installation instructions:
	OS X:
		$ brew install bash-completion
		$ source $(brew --prefix)/etc/bash_completion
		$ ipsw completion bash > ~/.ipsw-completion  # for bash users
		$ ipsw completion zsh > ~/.ipsw-completion   # for zsh users
		$ source ~/.ipsw-completion
	Ubuntu:
		$ apt-get install bash-completion
		$ source /etc/bash-completion
		$ source <(ipsw completion bash) # for bash users
		$ source <(ipsw completion zsh)  # for zsh users
	Additionally, you may want to output the completion to a file and source in your .bashrc
`
)

// completionCmd represents the completion command
var completionCmd = &cobra.Command{
	Use:    "completion <bash|zsh>",
	Short:  "Generates bash completion scripts",
	Long:   longDescription,
	Hidden: true,
	Args: func(cmd *cobra.Command, args []string) error {
		if len(args) != 1 {
			return fmt.Errorf("requires 1 arg, found %d", len(args))
		}
		return cobra.OnlyValidArgs(cmd, args)
	},
	ValidArgs: []string{"bash", "zsh"},
	Run: func(cmd *cobra.Command, args []string) {
		switch args[0] {
		case "bash":
			rootCmd.GenBashCompletion(os.Stdout)
		case "zsh":
			rootCmd.GenZshCompletion(os.Stdout)
		}
	},
}
